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96 lines
3.3 KiB
Python
96 lines
3.3 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2020 mmonkey
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from . import logger
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from .constants import CACHE_DIR
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from os import makedirs, remove
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from os.path import isdir, isfile, join
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from shutil import rmtree
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class FileSystem:
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_instance = None
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_cache_dir = CACHE_DIR
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(FileSystem, cls).__new__(cls)
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cls.log = logger.create()
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return cls._instance
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def get_cache_dir(self, cache_type=None):
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if not isdir(self._cache_dir):
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try:
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makedirs(self._cache_dir)
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except OSError:
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self.log.info(f'Failed to create path {self._cache_dir} (Permission denied).')
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raise
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path = join(self._cache_dir, cache_type)
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if cache_type and not isdir(path):
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try:
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makedirs(path)
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except OSError:
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self.log.info(f'Failed to create path {path} (Permission denied).')
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raise
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return path if cache_type else self._cache_dir
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def get_cache_file_dir(self, filename, cache_type=None):
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path = join(self.get_cache_dir(cache_type), filename[:2])
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if not isdir(path):
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try:
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makedirs(path)
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except OSError:
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self.log.info(f'Failed to create path {path} (Permission denied).')
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raise
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return path
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def get_cache_file_path(self, filename, cache_type=None):
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return join(self.get_cache_file_dir(filename, cache_type), filename) if filename else None
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def get_cache_file_exists(self, filename, cache_type=None):
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path = self.get_cache_file_path(filename, cache_type)
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return isfile(path)
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def delete_cache_dir(self, cache_type=None):
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if not cache_type and isdir(self._cache_dir):
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try:
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rmtree(self._cache_dir)
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except OSError:
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self.log.info(f'Failed to delete path {self._cache_dir} (Permission denied).')
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raise
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path = join(self._cache_dir, cache_type)
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if cache_type and isdir(path):
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try:
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rmtree(path)
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except OSError:
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self.log.info(f'Failed to delete path {path} (Permission denied).')
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raise
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def delete_cache_file(self, filename, cache_type=None):
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path = self.get_cache_file_path(filename, cache_type)
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if isfile(path):
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try:
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remove(path)
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except OSError:
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self.log.info(f'Failed to delete path {path} (Permission denied).')
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raise
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